tiled finish. The ceiling is double-height above much of the station's length, but drops beneath the south mezzanine and the original north mezzanine. The westernmost side platform was tiled over during the 1962 renovation; it contains yellow tiles and a cream trim line with written on it in black sans-serif font at regular intervals. The easternmost side platform retains most of its original decoration, with pink marble wainscoting, as well as pink marble pilasters spaced every . Between the pilasters and above the wainscoting are panels made of white tile, with gold-tiled borders. A maroon, blue, and gold tile frieze runs atop each panel, interrupted by T-shaped ceramic plaques with depictions of the Brooklyn Bridge, which are situated atop each pilaster. The Brooklyn Bridge ceramic tiles display the bridge's vertical cables but do not depict its diagonal cables. At intervals of every three panels, there are tile plaques with the station's name in place of the frieze. Sections of the original design, including the ceiling and walls, are heavily damaged or deteriorated. Track layout The two "express" tracks, currently unused in regular revenue service, merge into a single tail track south of the station. The tail track is long from the switch points to the bumper block, where an emergency exit is available. North of this station, there are two stub tracks, which end behind the now-closed Queens-bound side platform. These tracks were formerly connected to the south tracks of the Manhattan Bridge, until they were disconnected in 1967 as part of the Chrystie Street Connection, with the BMT Broadway Line being connected to the south tracks instead. Also north of this station, the former southbound express track (now the northbound track) splits into two tracks just south of Canal Street: the former northbound local track, and the former southbound express track (the current northbound track). IRT Lexington Avenue Line platforms The Brooklyn Bridge–City Hall station is an express station on the IRT Lexington Avenue Line, beneath Centre Street. It stretches between a point just south of Duane Street, to the north, and Park Row, to the south. The 4 and 6 trains stop here at all times; the 5 train stops here at all times except late nights; and the <6> train stops here during weekdays in the peak direction. The station serves as the southern terminal for the 6 train, which turns via the City Hall Loop to